Here is the full list of all 10 Dolmenjord - there are Viking Islands achievements.
Set up a village with a pit house
Set up a village with a smith house
Set up a village with a two-story house
Set up a village with a market
Set up a village with a poultry house
Set up a village with a temple
Set up a village with a small block
Set up a village with a farmhouse
Set up a village with a townhouse
Set up villages in two neighbour islands